Inside the park there are many activities adults and kids can take part in. Some of the most popular are the Condor Talk, with information on the endangered California Condor; the Fossil Walk, a half-a-mile walk among the exposed fossils; the Junior Ranger Discovery program, designed for families with children; the Junior Ranger Adventure Hike, which let's you enjoy the Grand Canyon with a Ranger; the Geology at the Canyon, with information on earth's history; among many other programs.
If you did not see enough during your visit, you can go to the National Geographic Imax theater in Tusayan and see a half-an-hour movie.